Insulation resistance detection tool for live working site

Abstract

The utility model relates to the field of insulation resistance detection tools, in particular to an insulation resistance detection tool for a hot-line work site, which is characterized in that a pull rod I and a pull rod II which are connected with each other are mounted in the middle of a handle piece in a limiting and sliding manner, one side of the pull rod I is connected with the pull rod, and a pair of clamping claws is rotationally mounted at one end of the pull rod II through an adapter plate. According to the utility model, the transverse rod is pulled to drive the clamping claw to move through the pull rod assembly, the clamping claw is in extrusion contact with the inner wall of the handle piece in the moving process and deflects inwards to clamp the test piece, and the clamping claw can stably clamp the test piece along with the movement of the transverse rod; and meanwhile, the wire penetrates through the pull rod assembly and is mounted on the rotating column of the clamping jaw for connection testing, so that the stability and the safety during detection are effectively ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of insulation resistance testing tools, and in particular to an insulation resistance testing tool for live-line working. Background Technology

[0002] Insulation resistance is a key parameter describing the electrical insulation performance of a material or device, rather than a specific object. It is a physical quantity that represents the ability of an insulating material to prevent current from passing through, reflecting the magnitude of leakage current under the influence of an electric field.

[0003] In live-line work, insulation resistance testing of the workpiece is required before each operation. However, the positive and negative electrodes of the insulation resistance meter are often connected to the testing equipment in the form of probes or clips. Current technology, as described in authorization announcement CN206020536 U, "An Insulation Resistance Testing Tool for Live-line Work," already employs a structure including "two testing electrodes arranged side-by-side, with the rear ends of both electrodes mounted on the front end of the insulating rod; the width and inter-electrode distance of the two electrodes are both 2cm; a coaxial shaft hole is formed inside the insulating rod, and an outlet hole communicating with the shaft hole is formed on the front side wall of the insulating rod; the rear end of the insulating rod is coaxially connected to the tail handle, and a central hole is formed inside the tail handle, which is coaxial with and communicates with the shaft hole of the insulating rod." This structure ensures human safety during live-line insulation resistance testing and improves on-site safety and testing standardization.

[0004] However, the above structure still has some defects in actual use. Its detection electrode is only set with a single arc structure to connect with the test piece, and its connection stability cannot be guaranteed, resulting in the inability to guarantee the test accuracy, stability and safety. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an insulation resistance testing tool for live-line working sites.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An insulation resistance testing tool for live-line work sites includes a handle. A pull rod 1 and a pull rod 2 are slidably mounted in the middle of the handle. One side of the pull rod 1 is connected to a crossbar, and one end of the pull rod 2 is rotatably mounted with a pair of clamping claws via an adapter plate.

[0008] Each of the clamping claws has a rotating post at one end. The rotating post is rotatably installed in the rotating groove in the middle of the adapter plate. The top of the rotating post extends out of the adapter plate and has a threaded section. A baffle plate is provided on the bottom side of the threaded section, and a locking nut is screwed onto the threaded section to install the wire.

[0009] In addition, a preferred structure is that a T-slot is provided on the outer side of the handle, and a crossbar is slidably installed in the T-slot, with the crossbar moving synchronously with the pull rod.

[0010] In addition, a preferred structure is that a limiting cylinder is installed in the middle of the handle, and the limiting cylinder is fitted with pull rod one and pull rod two, which are slidably installed on the inner wall of the limiting cylinder.

[0011] Furthermore, in a preferred configuration, one end of the first pull rod is fitted inside the second pull rod, and the first pull rod and the second pull rod are connected by a spring.

[0012] Furthermore, a preferred structure is that the first and second pull rods are hollow inside.

[0013] In addition, a preferred structure is that one end of the second pull rod is fixedly connected to an adapter plate, and a pair of rotating grooves are provided in the middle of the adapter plate.

[0014] In addition, a preferred structure is that the outer wall of the clamping claw is in contact with the inner wall of the handle, and the clamping claw is arc-shaped with a groove on its inner wall.

[0015] In addition, a preferred structure is that an operation port is provided on one side of the upper part of the handle, and an adapter piece is provided directly below the operation port.

[0016] The beneficial effects of this utility model are as follows:

[0017] In this invention, pulling the crossbar causes the clamping claw to move via the pull rod assembly. During the movement, the clamping claw presses against the inner wall of the handle and deflects inward to clamp the test piece. As the crossbar moves, the clamping claw firmly clamps the test piece. Meanwhile, by passing the wire through the pull rod assembly and installing it on the rotating column of the clamping claw for connection testing, the stability and safety during testing are effectively guaranteed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of an insulation resistance testing tool for live-line working, as proposed in this utility model.

[0019] Figure 2 This is a cross-sectional view of the internal structure of the handle component proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping claw mounting structure proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure of the first and second tie rods proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the adapter plate connection structure proposed in this utility model.

[0023] In the diagram: 1. Handle; 2. T-slot; 3. Crossbar; 4. Insulation resistance tester body; 5. Clamping claw; 51. Groove; 6. Operating port; 7. Pull rod one; 8. Pull rod two; 9. Limiting cylinder; 10. Adapter plate; 101. Rotating groove; 11. Locking nut; 12. Spring; 13. Rotating column; 131. Threaded section; 132. Baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-4 An insulation resistance testing tool for live-line work sites includes a handle 1. A pull rod 7 and a pull rod 8 are connected to each other and slidably mounted in the middle of the handle 1. One side of the pull rod 7 is connected to the crossbar 3, and one end of the pull rod 8 is rotatably mounted with a pair of clamping claws 5 through an adapter plate 10.

[0026] Furthermore, each clamping claw 5 has a rotating post 13 at one end. The rotating post 13 is rotatably installed in the rotating groove 101 opened in the middle of the adapter plate 10. The top end of the rotating post 13 extends out of the adapter plate 10 and has a threaded section 131. A baffle 132 is provided on the bottom side of the threaded section 131 for transition. A locking nut 11 is screwed onto the threaded section 131 to install the wire.

[0027] Furthermore, a T-groove 2 is provided on the outer side of the handle 1, and a crossbar 3 is slidably installed in the T-groove 2. The crossbar 3 moves synchronously with the first pull rod 7. When the first pull rod 7 moves, it drives the second pull rod 8 to move through the spring 12.

[0028] Furthermore, a limiting cylinder 9 is installed in the middle of the handle 1. The limiting cylinder 9 is connected to the first pull rod 7 and the second pull rod 8. The first pull rod 7 and the second pull rod 8 are slidably installed on the inner wall of the limiting cylinder 9.

[0029] Furthermore, one end of the pull rod 7 is fitted inside the pull rod 8, and the pull rod 7 and the pull rod 8 are connected by a spring member 12, which serves as a support, connection, and buffer.

[0030] Furthermore, the interiors of pull rod 7 and pull rod 8 are hollow to allow wires to pass through.

[0031] Furthermore, one end of the pull rod 8 is fixedly connected to an adapter plate 10, and a pair of rotating grooves 101 are provided in the middle of the adapter plate 10.

[0032] Furthermore, the outer wall of the clamping claw 5 is pressed against the inner wall of the handle 1, and the clamping claw 5 is arc-shaped with a groove 51 on its inner wall.

[0033] Furthermore, an operation port 6 is provided on the upper side of the handle 1, and an adapter piece 10 is provided directly below the operation port 6.

[0034] In this embodiment, the insulation resistance tester body 4 is inserted sequentially by positive and negative wires into the pull rod 7 and the pull rod 8. The wires are installed on the rotating column 13 at the operation port 6, and the corresponding locking nut 11 is installed to complete the connection with the clamping claws 5. Then, the crossbar 3 is pulled to move the pull rod 7. When the pull rod 7 moves, it moves in conjunction with the pull rod 8 through the spring 12. The pull rod 8 drives the pair of clamping claws 5 to move. Under the squeezing action of the end of the handle 1, the clamping claws 5 deflect inward and clamp the test piece.

[0035] In practical applications, the baffle 132 and the threaded section 131 are used to install the wires.

[0036] In practical applications, the spring component 12 acts as a buffer to prevent the pull rod 2 8 from moving excessively, which could lead to excessive clamping by the clamping claw 5 and damage to the structure.

[0037] In actual application, the rotating column 13 rotates normally in the rotating groove 101, and the rotating column 13 extends out of the upper wall of the adapter plate 10, while the baffle plate 132 does not contact the adapter plate 10.

[0038] In practical applications, the end of the clamping claw 5 is designed with an arc shape, which helps to connect the test piece.

[0039] It is worth noting that the insulation resistance tester body 4 is mounted on the guide clamp claws with positive and negative wires. Its specific detection principle and method are already existing technology and are common knowledge known to those skilled in the art, so they will not be explained further.

[0040] It is worth noting that the specific operating methods, procedures, and standards not explained in detail above are common knowledge to those skilled in the art, and therefore will not be elaborated upon further.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An insulation resistance testing tool for live-line working, comprising a handle (1), characterized in that, The handle (1) is slidably mounted with a pull rod 1 (7) and a pull rod 2 (8) connected to each other. One side of the pull rod 1 (7) is connected to the crossbar (3), and one end of the pull rod 2 (8) is rotatably mounted with a pair of clamping claws (5) through an adapter piece (10). Each of the clamping claws (5) has a rotating post (13) at one end. The rotating post (13) is rotatably mounted in the rotating groove (101) opened in the middle of the adapter plate (10). The top end of the rotating post (13) extends out of the adapter plate (10) and has a threaded section (131). A baffle (132) is provided on the bottom side of the threaded section (131) for transition. A locking nut (11) is screwed onto the threaded section (131) to install the wire.

2. The insulation resistance testing tool for live-line working as described in claim 1, characterized in that, The handle (1) has a T-slot (2) on its outer side, and a crossbar (3) is slidably installed in the T-slot (2). The crossbar (3) moves synchronously with the pull rod (7).

3. The insulation resistance testing tool for live-line working as described in claim 1, characterized in that, The handle (1) is equipped with a limiting cylinder (9) in the middle. The limiting cylinder (9) is used to limit the connection of pull rod one (7) and pull rod two (8). Pull rod one (7) and pull rod two (8) are slidably installed on the inner wall of the limiting cylinder (9).

4. The insulation resistance testing tool for live-line working as described in claim 3, characterized in that, One end of the first pull rod (7) is sleeved inside the second pull rod (8), and the first pull rod (7) and the second pull rod (8) are connected by a spring (12).

5. The insulation resistance testing tool for live-line working as described in claim 1, characterized in that, The pull rod one (7) and pull rod two (8) are hollow inside.

6. The insulation resistance testing tool for live-line working as described in claim 1, characterized in that, One end of the pull rod (8) is fixedly connected to an adapter plate (10), and a pair of rotating grooves (101) are provided in the middle of the adapter plate (10).

7. The insulation resistance testing tool for live-line working as described in claim 1, characterized in that, The outer wall of the clamping claw (5) is pressed against the inner wall of the handle (1), and the clamping claw (5) is arc-shaped and has a groove (51) on its inner wall.

8. The insulation resistance testing tool for live-line working as described in claim 1, characterized in that, An operation port (6) is provided on one side of the upper part of the handle (1), and an adapter plate (10) is provided directly below the operation port (6).

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